import java.util.ArrayList;

public class Test {


    public static void main(String[] args) {


        //Java官方提供的顺序表
        ArrayList<Integer> arrayList = new ArrayList<>();
        arrayList.add(1);
        arrayList.add(68);
        arrayList.add(53);
        arrayList.add(10);
        System.out.println(arrayList);

        ArrayList<Integer> arr2=new ArrayList<>(arrayList);
        System.out.println(arr2);
    }

}
